±2.5mA DC Interchangeable Dial for Demonstration Meter Glass Sets & Apparatus_Organic Chemistry Sets Wooden fulcrum-balance simple-machine model with

Wooden fulcrum-balance simple-machine model with a sliding pivot

Equipped with a flexible delivery tube and capped tip for better aim when rinsing glassware

Nine removable sections expose cortical hemispheres

Five-centimeter brass sphere mounted on an ebonite-insulated metal base

this magnified animal cell model reveals organelle ultrastructure and cellular organization for advanced biology instruction

±2.5mA DC Interchangeable Dial for Demonstration Meter Glass Sets & Apparatus_Organic Chemistry Sets Wooden fulcrum-balance simple-machine model withPlus or minus 2. 5mA DC interchangeable scale on a 315x115mm laminated panel with integrated shunt, sized to drop into the demonstration meter and reconfigure it as a center zero ammeter.